A filter assembly with a clogging alarm

Abstract

This utility model relates to a filter assembly with a blockage alarm, including a filter housing, a filter shell, and a filter element. The filter shell is threadedly connected to the filter housing. It also includes a transition bracket and a return spring. A blockage alarm is installed at the bottom of the filter element. Through the linkage design of the transition bracket and the return spring, when the filter element begins to blockage, causing an increase in oil pressure, the transition bracket is pressed upwards, directly triggering the bottom blockage alarm and sending a signal to the control panel in the cab in real time. This mechanical triggering mechanism responds quickly and can provide early warning in the early stages of blockage, preventing damage to hydraulic components due to oil flow interruption or abnormal pressure, reducing maintenance costs and downtime risks. The filter element mounting support adopts an inner and outer double-ring support design with a first support and a second support, enhancing the radial stability and axial positioning accuracy of the top of the filter element, effectively preventing the filter element from shaking or shifting under the impact of high-pressure oil flow, improving filtration efficiency and service life.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle parts technology, specifically relating to a filter assembly with a blockage alarm. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Air filters are crucial filtration devices in vehicle engine intake and transmission lubrication systems. They are primarily used to efficiently remove dust, impurities, and fine particles from the air and lubricating oil, ensuring system cleanliness. When dust or impurities accumulate on the filter element, they increase resistance in the intake or oil passages, leading to problems such as insufficient engine power, unstable operation, and increased fuel consumption. In severe cases, they can even cause the engine to stall or the vehicle to fail to start, and may accelerate the wear of related components. In loader transmissions, independently installed filters are commonly used to filter the lubricating oil. This design facilitates maintenance and filter replacement, effectively protecting precision components in the hydraulic system, such as pumps, valves, and bearings, from contamination. However, these filters are prone to clogging due to impurity buildup during long-term use. Once clogged, they not only completely lose their filtering function and fail to effectively intercept harmful particles, but also cause poor hydraulic oil flow, decreased oil pressure, and consequently affect the transmission's shifting performance and overall reliability.

[0004] In existing technologies, alarm sensor systems are typically used to indicate faults via indicator lights or audible devices. These sensors are only activated when the filter becomes clogged, triggering a flashing indicator light or an audible alarm to remind maintenance personnel to replace or clean the filter element promptly. However, because the alarm mechanism only activates after a clogging event occurs, it lacks preventative monitoring capabilities. Maintenance personnel cannot receive early warnings of clogging, which can easily lead to damage to hydraulic components due to interrupted oil flow or abnormal pressure shortly after clogging, increasing maintenance costs and downtime risks. Utility Model Content

[0005] The purpose of this invention is to provide a filter assembly with a clogging alarm, which can at least solve one of the above-mentioned technical problems.

[0006] To achieve the above objectives, one or more embodiments of this utility model provide a filter assembly with a clogging alarm, including a filter base, a filter housing, and a filter element. A nut seat is provided below the filter base, and the filter housing is threadedly connected to the bottom of the filter base. The filter element is coaxially arranged with the filter housing, and the top of the filter element is snapped and fixed to the inner wall of the filter base by a filter element mounting upper support, and the bottom of the filter element is snapped and fixed by a mounting lower support. It also includes a transition bracket and a return spring. The transition bracket is coaxially connected to the mounting lower support, and the top of the transition bracket is provided with a radial flange. The bottom of the transition bracket abuts against the top of the return spring. The bottom of the return spring is fixed to the inner bottom surface of the filter housing. A clogging alarm is provided at the bottom of the filter element, and the clogging alarm is located on the bottom of the filter housing. The clogging alarm is connected to the control panel in the driver's cab via a signal line.

[0007] Furthermore, the filter element is mounted on a support including a first support and a second support, wherein the first support is disposed on the outer ring of the top of the filter element and the second support is disposed on the inner ring of the top of the filter element.

[0008] Furthermore, a sealing gasket is provided between the filter housing and the filter seat, and a sealing ring is provided between the filter element mounting support and the filter seat.

[0009] Furthermore, the detection end of the blockage alarm vertically penetrates the lower support and extends below the top flange of the transition bracket.

[0010] Furthermore, the blockage alarm is fixed to the center hole at the bottom of the filter housing by a threaded connection.

[0011] Furthermore, a seal is provided between the blockage alarm and the filter housing.

[0012] Furthermore, a spring seat is provided above the top flange of the transition bracket, the spring seat including an upper cover and a lower cover installed opposite to each other, and an adjusting spring is provided between the upper cover and the lower cover.

[0013] Furthermore, an adjusting nut is provided on the top of the upper cover.

[0014] Furthermore, the lower cover and the mounting support are provided with sealing gaskets, and the upper cover and the lower cover are fixed to the mounting support by double-ended studs.

[0015] Furthermore, the oil inlet and outlet of the filter are both located on the same side of the filter housing.

[0016] The beneficial effects of one or more of the above technical solutions are as follows: This invention utilizes a linkage design between a transition bracket and a return spring. When the filter element begins to clog, causing an increase in oil pressure, the transition bracket moves upward under pressure, directly triggering the bottom blockage alarm and sending a signal to the control panel in the cab in real time. This mechanical triggering mechanism responds quickly, providing early warning in the early stages of blockage, preventing damage to hydraulic components due to oil flow interruption or abnormal pressure, and reducing maintenance costs and downtime risks.

[0017] The filter element installation support adopts an inner and outer double ring support design with the first and second supports, which enhances the radial stability and axial positioning accuracy of the top of the filter element, effectively preventing the filter element from shaking or shifting under the impact of high pressure oil flow, and improving filtration efficiency and service life.

[0018] The detection end of the blockage alarm extends vertically to below the flange of the transition bracket, directly monitoring the bracket displacement, eliminating signal transmission errors, and improving alarm accuracy and reliability. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0020] Figure 1 This is a front view schematic diagram of the overall structure in one or more embodiments of this utility model; Figure 2 For one or more embodiments of this utility model Figure 1 Enlarged view of part A; Figure 3 This is a top view of the overall structure in one or more embodiments of the present invention.

[0021] In the diagram, 1. Filter housing; 2. Filter housing; 3. First support; 4. Second support; 5. Filter element; 6. Adjusting nut; 7. Adjusting spring; 8. Double-ended stud; 9. Blockage alarm; 10. Return spring; 11. Transition bracket; 12. Lower mounting support; 13. Lower cover; 14. Upper cover; 15. Oil inlet; 16. Oil outlet. Detailed Implementation

[0022] like Figures 1 to 3 As shown, this embodiment provides a filter assembly with a blockage alarm, including a filter holder 1, a filter housing 2, a filter element 5, a transition bracket 11, and a return spring 10.

[0023] Specifically, the oil inlet 15 and oil outlet 16 of the filter are both located on the same side of the filter housing 1, which optimizes the oil circuit layout, reduces the number of pipe bends and joints, thereby significantly reducing fluid resistance and improving system efficiency, while reducing energy loss; the filter housing 2 and the filter base adopt a split structure, which is convenient for disassembly and maintenance. For example, when replacing the filter element 5, it is not necessary to disassemble the entire system, ensuring that the replacement of the filter element 5 is quick and efficient, and enhancing overall durability and extending service life.

[0024] like Figure 1 As shown, a nut seat is provided below the filter base, and the filter housing 2 is threadedly connected to the bottom of the filter base 1 to ensure a stable connection. The filter element 5 is coaxially arranged with the filter housing 2. The top of the filter element 5 is fixed to the inner wall of the filter base 1 by the filter element 5 mounting support, and the bottom of the filter element 5 is fixed by the mounting support 12 to ensure the precise alignment and stable operation of the filter element 5. A sealing gasket is provided between the filter housing 2 and the filter base 1 to prevent fluid leakage and ensure the system's airtightness. The filter element 5 is installed between the upper support and the filter base 1 and is provided with an oil-resistant sealing ring to isolate external impurities and contaminants, ensuring filtration efficiency and oil purity.

[0025] Specifically, such as Figure 2 As shown, the filter element 5 is mounted on a support including a first support 3 and a second support 4. The first support 3 is located on the outer ring of the top of the filter element 5 to provide the main radial support and prevent the filter element 5 from shaking during operation. The second support 4 is located on the inner ring of the top of the filter element 5 and works with the first support 3 to ensure the axial positioning and stable installation of the top of the filter element 5. The double support structure enhances the pressure resistance and installation accuracy of the filter element 5.

[0026] like Figure 3 As shown, the transition bracket 11 is coaxially connected to the mounting support 12. The top of the transition bracket 11 is provided with a radial flange, which extends outward to provide a stable support surface for withstanding oil pressure impact. The bottom of the transition bracket 11 abuts against the top of the return spring 10. The bottom end of the return spring 10 is fixed to the inner bottom surface of the filter housing 2, and the spring force maintains the transition bracket 11 in a preset position. The bottom of the filter element 5 is provided with a blockage alarm 9, which is connected to the control panel in the cab via a signal line to realize real-time status monitoring. The blockage alarm 9 is located in the center hole at the bottom of the filter housing 2 to monitor the blockage status of the filter element 5 and respond promptly in case of abnormality.

[0027] In addition, a spring seat is provided above the top flange of the transition bracket 11. The spring seat includes an upper cover 14 and a lower cover 13 mounted opposite each other. An adjusting spring 7 is installed between the upper cover 14 and the lower cover 13 to provide adjustable elastic support to adapt to different working pressure and temperature changes. An adjusting nut 6 is provided on the top of the upper cover 14 to facilitate manual adjustment of the height of the spring 7 seat or adjustment of the tension of the spring 7. Users can adjust the trigger threshold according to system requirements. A sealing gasket is provided between the lower cover 13 and the mounting lower support 12 to ensure good sealing at the connection and prevent oil leakage. The upper cover 14 and the lower cover 13 are fixed to the mounting lower support 12 by double-ended studs 8 to achieve a stable installation structure and improve overall reliability.

[0028] like Figure 1 and Figure 3 As shown, the detection end of the blockage alarm 9 vertically penetrates the mounting support 12 and extends to the space below the top flange of the transition bracket 11. The blockage alarm 9 is fixed to the center hole at the bottom of the filter housing 2 by threaded connection, achieving accurate positioning and reliable connection. An annular seal is provided between the corresponding interface of the blockage alarm 9 and the filter seat 1 to ensure the sealing performance of the connection and prevent oil leakage and signal distortion.

[0029] The working principle of this utility model: Under normal operating conditions: Lubricating oil flows in through the oil inlet 15 of the filter seat 1, and is filtered efficiently through the filter element 5 to remove fine particulate impurities. The oil is then delivered to the hydraulic system from the oil outlet 16 of the filter seat 1. At this time, the blockage alarm 9 is in the closed circuit state, and the control panel displays a normal operating signal to ensure stable system operation. Clogging Condition: When filter element 5 becomes clogged due to the accumulation of impurities, the pressure at the oil inlet 15 continues to rise. Once the oil pressure exceeds the preset pressure threshold of the return spring 10, the oil will push the transition bracket 11 upward, forcing the oil flow to be diverted and flow directly from the bypass hole of the lower support 12 to the oil outlet 16, thus preventing the system from shutting down due to clogging. At the same time, the displacement of the transition bracket 11 triggers the clogging alarm 9 to disconnect the circuit and immediately outputs an alarm signal to the control panel in the cab, prompting the user to replace filter element 5 in time to ensure the safety and continuous operation of the system.

[0030] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A filter assembly with a clogging alarm, comprising a filter base, a filter housing, and a filter element; a nut seat is provided below the filter base; the filter housing is threadedly connected to the bottom of the filter base; the filter element is coaxially arranged with the filter housing; the top of the filter element is fixedly engaged with the inner wall of the filter base via an upper filter element mounting support; and the bottom of the filter element is fixedly engaged with a lower mounting support; characterized in that... It also includes a transition bracket and a return spring; the transition bracket is coaxially connected to the mounting support, the top of the transition bracket is provided with a radial flange, and the bottom of the transition bracket abuts against the top of the return spring; the bottom end of the return spring is fixed to the inner bottom surface of the filter housing; a blockage alarm is provided at the bottom of the filter element, the blockage alarm is located on the bottom of the filter housing, and the blockage alarm is connected to the control panel in the cab via a signal line.

2. The filter assembly with clogging alarm according to claim 1, characterized in that The filter element is mounted on a support including a first support and a second support. The first support is disposed on the outer ring of the top of the filter element, and the second support is disposed on the inner ring of the top of the filter element.

3. The filter assembly with clogging alarm of claim 1, wherein, A sealing gasket is provided between the filter housing and the filter base, and a sealing ring is provided between the filter element mounting support and the filter base.

4. The filter assembly with clogging alarm of claim 1, wherein, The detection end of the blockage alarm penetrates vertically through the lower support and extends to below the top flange of the transition bracket.

5. The filter assembly with clogging alarm of claim 1, wherein, The blockage alarm is fixed to the center hole at the bottom of the filter housing by a threaded connection.

6. The filter assembly with clogging alarm of claim 1, wherein A seal is provided between the blockage alarm and the filter housing.

7. The filter assembly with clogging alarm of claim 1, wherein A spring seat is provided above the top flange of the transition bracket. The spring seat includes an upper cover and a lower cover installed opposite to each other, and an adjusting spring is provided between the upper cover and the lower cover.

8. The filter assembly with clogging alarm according to claim 7, characterized in that An adjusting nut is provided on the top of the cover.

9. A filter assembly with a clogging alarm according to claim 7, characterized in that, The lower cover and the mounting support are equipped with sealing gaskets, and the upper cover and the lower cover are fixed to the mounting support by double-ended studs.

10. The filter assembly with clogging alarm of claim 1, wherein The oil inlet and outlet of the filter are both located on the same side of the filter housing.

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